Method ob forging- fulcrttms



L. L. WHITNEY.

METHOD OF FORGING FULCRUMS.

APPLICATION FILED JAN. 15. I917.

1,323,341. a Patented Dec. 2,1919.

UNITED STATES PATENT OFFICE.

LOREN L. WHITNEY, 0E HAMMOND, INDIANA, ASSIGNOR T0 AMERICAN STEEL FOUNDRIES, OF NEW YORK, N. Y.,

A CORPORATION OF NEW JERSEY.

METHOD OF FORGING- EULCRUMS.

Application filed January 15, 1917. Serial No. 142,428.

To all whom it may concern:

Be it known that I, LOREN L. WHrrNEY,

a citizen of the Unitedstates, and resident fulcrums was disclosed, by means of w ich' method a fulcrum of desirable form was produced. It has been found, however, that in some instances a fulcrum is desired having an eye at its end instead of a saddle for the accommodation of the tension rod. An object in the present invention is to provide a novel method of forging whereby this eye may be formed simultaneously, or substantially so, with the formation of the fulcrum.

The method will be disclosed in connection with the illustrations in the accompanying drawings, in which Figure 1 is a View of the fulcrum showing its condition after the first forging operation;

Fig. 2 is a similar view showing its condition after the second forging operation;

Fig. 3 is another view of the construction shown in Fig. 2, and

Fig. 4 is a view of the completed fulcrum, the eye having been completed by drilling or punching.

The first steps in the forging operatlons may be similar to those disclosed in the Bauer patent heretofore referred to. By those steps a member is formed having par allel twisted side members 10, 11, a thick end wall 12 and lateral terminal portions 13, 14, for engagement with the compression member of the beam. The next operation is to clamp the member of Fig. 1 in suitable dies and to bulldoze the end to form the web or thin lug 15, the plane of which is at right angles to the plane of the lateral extensions 13. 14. In effect the same action occurs in the formation of this web 15 as in the formation of the saddle shown in the patent heretofore referred to. It is, however, necessary to cause a more pronounced lateral Specification of Letters Patent.

Patented Dec. 2, 1919.

V defiection'of the metal-in the production of the eyei The next operation is that of drilling or punching out the hole 16 through which the tension rod extends. In the forging operation it will be noted'that the bearing or seat 17, indicated in dotted lines in Fig. 2, is formed simultaneously with the web 15, the flanges 18 being provided above'and below the seat in order to securely retain the tension rod.

Obviously the steps in the method may be varied to a certainextent without materially altering the final result and therefore the appended claims should not be construed to be limited to the'exact order stated therein.

I claim:

1. The method of forging brake beam fulcrums, which consists in bending a flat bar to provide parallel twisted side members and a thickened end wall, then upsetting said end wall to form a thin lug at right angles to the tension rod seat and located in a vertical position with relation to the beam when in service, then providing a transverse perforation in saidweb for the accommodation of a tension rod, substantially as described.

2. The method of forging brake beam fulcrums, which consists in doubling a bar of metal upon itself and providing a thickened end wall, then bulldozing said end to provide a tension rod bearing-and an endwise projecting web which extends across said bearing and at right angles thereto, then perforating said web at the point of'said bearing to provide an eye for the accommodation of a tension rod, substantially as de- LOREN WHITNEY.

Witnesses:

WILLIAM C. HEDGCOCKE, GEORGE A. PETERSON, 

